Year | Value | 2022 | 33,535 | 2021 | 32,710 | 2020 | 31,817 | 2019 | 30,916 | 2018 | 30,003 | 2017 | 29,082 | 2016 | 28,148 | 2015 | 27,213 | 2014 | 26,334 | 2013 | 25,550 | 2012 | 24,857 | 2011 | 24,244 | 2010 | 23,708 | 2009 | 23,241 | 2008 | 22,845 | 2007 | 22,507 | 2006 | 22,196 | 2005 | 21,905 | 2004 | 21,623 | 2003 | 21,333 | 2002 | 21,023 | 2001 | 20,680 | 2000 | 20,282 | 1999 | 19,845 | 1998 | 19,400 | 1997 | 18,976 | 1996 | 18,621 | 1995 | 18,354 | 1994 | 18,067 | 1993 | 17,662 | 1992 | 17,163 | 1991 | 16,570 | 1990 | 15,878 | 1989 | 15,166 | 1988 | 14,500 | 1987 | 13,841 | 1986 | 13,171 | 1985 | 12,510 | 1984 | 11,857 | 1983 | 11,240 | 1982 | 10,656 | 1981 | 10,065 | 1980 | 9,487 | 1979 | 8,969 | 1978 | 8,507 | 1977 | 8,111 | 1976 | 7,820 | 1975 | 7,647 | 1974 | 7,586 | 1973 | 7,577 | 1972 | 7,576 | 1971 | 7,574 | 1970 | 7,520 | 1969 | 7,380 | 1968 | 7,189 | 1967 | 6,992 | 1966 | 6,807 | 1965 | 6,634 | 1964 | 6,485 | 1963 | 6,368 | 1962 | 6,267 | 1961 | 6,174 | 1960 | 6,079 |
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